Keyboard FeaturesMedia Center - Four hot keys let you control the most-used media activitiesHot Keys Included - play/pause, volume up, volume down, and muteQuiet-touch Keys - Quiet, responsive, thin-profile keysCalculator Hot Key - One touch of the button and you can quickly access the CalculatorSpill-Resistant - Enjoy a drink whilst working, keyboard is designed to withstand an accidental spillWindows Start Button - Launch start menu and search your PC or Internet with Windows Vista installedPlug and Play - No software needed. Just connect the keyboard to your PC and goMouse FeaturesUse your mouse with left or right hand - ambidextrous design makes it comfortable either wayOptical Technology - Navigate with better speed, accuracy and reliabilityThe optical sensor tracks movement on nearly any surfaceScroll Wheel - Move through documents quickly without having to click on the on-screen scroll barCombines Sleek Design with Exceptional ValueThis desktop set combines a spill-resistant keyboard and optical mouse to deliver all the features you need - and more - with Microsoft quality and reliability. Enjoy plug-and-play setup, Windows Vista